21011001222003 has 32 divisors (see below), whose sum is σ = 31486353744384. Its totient is φ = 12365720328192.

The previous prime is 21011001221941. The next prime is 21011001222017. The reversal of 21011001222003 is 30022210011012.

It is not a de Polignac number, because 21011001222003 - 2⁶ = 21011001221939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21011001272003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3819475 + ... + 7523987.

It is an arithmetic number, because the mean of its divisors is an integer number (983948554512).

Almost surely, 2^{21011001222003} is an apocalyptic number.

21011001222003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21011001222003 is a deficient number, since it is larger than the sum of its proper divisors (10475352522381).

21011001222003 is a wasteful number, since it uses less digits than its factorization.

21011001222003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710875.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21011001222003 its reverse (30022210011012), we get a palindrome (51033211233015).

The spelling of 21011001222003 in words is "twenty-one trillion, eleven billion, one million, two hundred twenty-two thousand, three".